**Welcome to Electromagnetics**

**Description:**

This course should provide the PhD candidates in the Wireless program the necessary background on the physical aspects of radiowave communication. The motivation follows the well-known fact that students in this program come from various backgrounds, often specialized in communication protocols and information theory, but lacking the necessary physical insight into electromagnetic fields, antennas and radiowave propagation. For the rest of the participants, this course should give a recapitulation of the previously acquired knowledge and extending it to meet the needs of their dissertation, as many of them will need to design an antenna and/or carry out electromagnetic simulations in their projects.

**Prerequisites:**

Basic BSc/MSc course in electromagnetics

Vector calculus on MSc level

**Learning objectives:**

Electromagnetic theory (OF):

Fundamentals of wireless communication; Maxwell's equations; material properties; boundary conditions; concepts of perfect electric and magnetic conductors; time-harmonic fields; power and energy; Poynting's theorem; wave equation and its solutions; wave propagation; standing waves; polarization; reflection and transmission; radiation; duality theorem; uniqueness theorem; image theory; reciprocity theorem; surface equivalence theorem; Huygens' principle; induction theorem.

Numerical methods (OF):

Most common numerical methods in electromagnetics and their classification; introduction to the FDTD method; stability; dispersion; boundary conditions; absorbing boundary conditions; near to far field transformation; characteristic problems; examples of FDTD software; AFC (APNet FDTD Code); CST Microwave Studio; electromagnetic wave absorption in human tissues; specific absorption rate; homogeneous and heterogeneous phantoms.

Antennas (SCDB):

Antenna basics; antenna parameters; radiation pattern; near field/far field; radiation of small dipole antenna; radiation intensity; power density; power gain; directivity; antenna efficiency; Poynting vector; OTA measurements; polarization; bandwidth; antenna matching; antenna Q; antenna limits; antenna tuning for mobile communications; reconfigurable antennas; MIMO antennas.

**Teaching methods:**

2 days of lectures:

1 day lectures (3 hrs morning + 3 hrs afternoon) on Electromagnetic theory and numerical methods given by Ondrej Franek

1 day lectures (3 hrs morning + 3 hrs afternoon) on Antennas given by Samantha Caporal Del Barrio

1 mini-project of approx. 1 month duration supervised and evaluated by Ondrej Franek

**Criteria for assessment:**Attendance of the lectures + evaluation of the mini-project.

**Key literature:**

Not necessary for passing the course, but for further reading:

[1] C. A. Balanis, Advanced Engineering Electromagnetics, Wiley 1989

[2] C. A. Balanis, Antenna Theory, Analysis and Design, 2nd ed., Wiley 1997

[3] R. F. Harrington, Time-Harmonic Electromagnetic Fields, IEEE Press 1961 (2001).

[4] A. Taflove, S. Hagness, Computational Electrodynamics: The Finite-Difference Time-Domain Method, Artech House 1995 (2000, 2005).

[5] J. Jin, The Finite Element Method in Electromagnetics, Wiley 1993 (2002, 2014).

[6] R. F. Harrington, Field Computation by Moment Methods, Wiley 1968 (1993).

**Organizer: **Associate Professor Ondrej Franek, of@es.aau.dk

**Lecturers: **Associate Professor Ondrej Franek, of@es.aau.dk and Postdoc Samantha Caporal Del Barrio, scdb@es.aau.dk **ECTS: **2 **Time: **16 and 17 October 2017 **Place:**

Zip code:

City: **Number of seats: **20**Deadline: **25 September 2017.

- Teacher: Ondrej Franek